This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is lost between trophic levels and cannot be recycled? A) Heat. B) Nitrogen. C) Carbon compounds. D) Biomass. Show Answer Correct Answer: A) Heat. 2. Over-harvesting A) Taking too many resources from nature, faster than they can be replaced. B) A sustainable method of resource extraction. C) The practice of planting more trees than are cut down. D) A technique to increase fish populations in oceans. Show Answer Correct Answer: A) Taking too many resources from nature, faster than they can be replaced. 3. Unlike energy, matter is not constantly added to ecosystems. Instead, it is recycled. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Which option correctly describes predator and prey? A) Both predator and prey perform photosynthesis. B) Predator hunts and kills; prey is killed for food. C) Predator is hunted; prey hunts and kills. D) None of the above. Show Answer Correct Answer: B) Predator hunts and kills; prey is killed for food. 5. In which of the following ecosystems can you find fertile, rich soil? A) Grasslands. B) Wetlands. C) Oceans. D) None of the above. Show Answer Correct Answer: A) Grasslands. 6. A snake is an example of a(n) A) Invertebrate. B) Vertebrate. C) All the above. D) None of the above. Show Answer Correct Answer: B) Vertebrate. 7. Photosynthesis uses the green pigment molecule called ..... A) Chloroplast. B) Chlorophyll. C) Stem. D) None of the above. Show Answer Correct Answer: B) Chlorophyll. 8. What is the term for each step in the transfer of energy and matter within a biological community? A) Energy path. B) Food web. C) Trophic level. D) Food pyramid. Show Answer Correct Answer: C) Trophic level. 9. True or False:A keystone species has a powerful influence on an ecosystem A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. Which type of symbiosis involves both species benefitting? +/+ A) Mutualism. B) Commensalism. C) Parasitism. D) None of the above. Show Answer Correct Answer: A) Mutualism. 11. The ..... zone is the place where the ocean meets the land. A) Intertidal. B) Neritic. C) Oceanic. D) Benthic. Show Answer Correct Answer: A) Intertidal. 12. An area where fresh water from streams and rivers spills into the ocean is called an ..... A) Plankton. B) Estuary. C) Sargassums. D) Coral reefs. Show Answer Correct Answer: B) Estuary. 13. Berikut ini yang tergolong organisme heterotrof adalah ..... A) Lumut. B) Ganggang. C) Tali putri. D) Tumbuhan paku. Show Answer Correct Answer: C) Tali putri. 14. What is the significance of biodiversity in ecosystems? A) Biodiversity enhances ecosystem productivity and stability. B) Biodiversity decreases competition among species. C) Biodiversity leads to increased pollution levels. D) Biodiversity reduces the resilience of ecosystems. Show Answer Correct Answer: A) Biodiversity enhances ecosystem productivity and stability. 15. What is one of the toxic compounds that can be associated with mining? A) Oxygen. B) Carbon dioxide. C) Mercury. D) Salt. Show Answer Correct Answer: C) Mercury. 16. An example of a cause of changes in nutrient cycles is ..... A) Flooding. B) Storms. C) Pollution. D) None of the above. Show Answer Correct Answer: C) Pollution. 17. A symbiotic relationship where both organisms benefit A) Symbiosis. B) Mutualism. C) Parasitism. D) Commensalism. Show Answer Correct Answer: B) Mutualism. 18. How does the amount of energy change as it moves up an energy pyramid A) It increases. B) It decreases. C) It stays the same. D) None of the above. Show Answer Correct Answer: B) It decreases. 19. What are ecosystem services? A) Products obtained from ecosystems. B) Benefits that humans obtain from ecosystems. C) Services provided by technology. D) Benefits that animals obtain from ecosystems. Show Answer Correct Answer: B) Benefits that humans obtain from ecosystems. 20. Which of the following do all living things contain but non-living things do not? A) Cells. B) Elements. C) Molecules. D) Minerals. Show Answer Correct Answer: A) Cells. 21. Which of the following is not an abiotic factor in the prairie ecosystem? A) Water. B) Sunlight. C) Soil. D) Grass. Show Answer Correct Answer: D) Grass. 22. Animals need other ..... and ..... to grow and thrive. A) Humans. B) Homes. C) Plants. D) Animals. E) Areas. Show Answer Correct Answer: D) Animals. 23. ..... make their own food. A) Producers. B) Consumers. C) Carnivores. D) Herbivores. Show Answer Correct Answer: A) Producers. 24. What was one of the reasons early humans studied plants? A) To use them for decoration. B) To recognize poisonous plants. C) To make clothing. D) To build houses. Show Answer Correct Answer: B) To recognize poisonous plants. 25. Living things not naturally found in the ecosystem that cause damage and throw off the balance of the ecosystem are invasive species. A) X. B) True. C) False. D) X. Show Answer Correct Answer: B) True. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 14 Ecosystem Quiz 1Class 12 Biology Chapter 14 Ecosystem Quiz 2Class 12 Biology Chapter 14 Ecosystem Quiz 3Class 12 Biology Chapter 14 Ecosystem Quiz 4Class 12 Biology Chapter 14 Ecosystem Quiz 5Class 12 Biology Chapter 14 Ecosystem Quiz 6Class 12 Biology Chapter 14 Ecosystem Quiz 7Class 12 Biology Chapter 14 Ecosystem Quiz 8Class 12 Biology Chapter 14 Ecosystem Quiz 10Class 12 Biology Chapter 14 Ecosystem Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books